﻿//
// UpdateProgress.cs
//
// Author:
//   Igor Zelmanovich <igorz@mainsoft.com>
//
// (C) 2007 Mainsoft, Inc.  http://www.mainsoft.com
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
using System.Web.UI;

namespace mojoPortal.Web.UI
{
    /// <summary>
    /// copied and modified from the Mono implementation of UpdateProgress
    /// renders as a span instead of a div so that we don't have to have the progress on a new line
    /// </summary>
    [PersistChildren(false)]
    [ParseChildren(true)]
    [DefaultProperty("AssociatedUpdatePanelID")]
   // [Designer("System.Web.UI.Design.UpdateProgressDesigner, System.Web.Extensions.Design, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35")]
    public class UpdateProgressSpan : Control, IScriptControl
    {
        ITemplate _progressTemplate;
        ScriptManager _scriptManager;

        [Category("Behavior")]
        [DefaultValue("")]
        [IDReferenceProperty(typeof(UpdatePanel))]
        public string AssociatedUpdatePanelID
        {
            get
            {
                return (string)ViewState["AssociatedUpdatePanelID"] ?? String.Empty;
            }
            set
            {
                ViewState["AssociatedUpdatePanelID"] = value;
            }
        }

        [Category("Behavior")]
        [DefaultValue(500)]
        public int DisplayAfter
        {
            get
            {
                object o = ViewState["DisplayAfter"];
                if (o == null)
                    return 500;
                return (int)o;
            }
            set
            {
                ViewState["DisplayAfter"] = value;
            }
        }

        [Category("Behavior")]
        [DefaultValue(true)]
        public bool DynamicLayout
        {
            get
            {
                object o = ViewState["DynamicLayout"];
                if (o == null)
                    return true;
                return (bool)o;
            }
            set
            {
                ViewState["DynamicLayout"] = value;
            }
        }

        [PersistenceMode(PersistenceMode.InnerProperty)]
        [Browsable(false)]
        public ITemplate ProgressTemplate
        {
            get
            {
                return _progressTemplate;
            }
            set
            {
                _progressTemplate = value;
            }
        }

        ScriptManager ScriptManager
        {
            get
            {
                if (_scriptManager == null)
                {
                    _scriptManager = ScriptManager.GetCurrent(Page);
                    if (_scriptManager == null)
                        throw new InvalidOperationException(String.Format("The control with ID '{0}' requires a ScriptManager on the page. The ScriptManager must appear before any controls that need it.", ID));
                }
                return _scriptManager;
            }
        }

        protected virtual IEnumerable<ScriptDescriptor> GetScriptDescriptors()
        {
            string updatePanelClientId;
            if (String.IsNullOrEmpty(AssociatedUpdatePanelID))
                updatePanelClientId = null;
            else
            {
                UpdatePanel updatePanel = FindControl(AssociatedUpdatePanelID) as UpdatePanel;
                if (updatePanel == null)
                    throw new InvalidOperationException("No UpdatePanel found for AssociatedUpdatePanelID '" + AssociatedUpdatePanelID + "'.");
                updatePanelClientId = updatePanel.ClientID;
            }
            ScriptControlDescriptor descriptor = new ScriptControlDescriptor("mojo._UpdateProgress", this.ClientID);
            descriptor.AddProperty("associatedUpdatePanelId", updatePanelClientId);
            descriptor.AddProperty("displayAfter", DisplayAfter);
            descriptor.AddProperty("dynamicLayout", DynamicLayout);
            yield return descriptor;
        }

        protected virtual IEnumerable<ScriptReference> GetScriptReferences()
        {
            yield break;
        }

        protected override void OnPreRender(EventArgs e)
        {
            base.OnPreRender(e);
#if !MONO
            try
            {
                ScriptReference scriptReference = new ScriptReference();
                scriptReference.Path = "~/ClientScript/ajaxupdateprogressspan.js";
                //scriptReference.Assembly = "mojoPortal.Web";
                //scriptReference.Name = "ajaxupdateprogressspan.js";
                //scriptReference.ScriptMode = ScriptMode.Release;
                ScriptManager.Scripts.Add(scriptReference);
                ScriptManager.RegisterScriptControl(this);
            }
            catch (TypeLoadException) { } //this can happen if SP1 for .NET 3.5 is not installed
#endif

            if (_progressTemplate == null)
                throw new InvalidOperationException(String.Format("A ProgressTemplate must be specified on UpdateProgress control with ID '{0}'.", ID));

            Control container = new Control();
            _progressTemplate.InstantiateIn(container);
            Controls.Add(container);
        }

        protected override void Render(HtmlTextWriter writer)
        {
            if (DynamicLayout)
                writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "none");
            else
            {
                writer.AddStyleAttribute(HtmlTextWriterStyle.Display, "inline");
                writer.AddStyleAttribute(HtmlTextWriterStyle.Visibility, "hidden");
            }
            writer.AddAttribute(HtmlTextWriterAttribute.Id, ClientID);
            writer.RenderBeginTag(HtmlTextWriterTag.Span);
            base.Render(writer);
            writer.RenderEndTag();

            ScriptManager.RegisterScriptDescriptors(this);
        }

        #region IScriptControl Members

        IEnumerable<ScriptDescriptor> IScriptControl.GetScriptDescriptors()
        {
            return GetScriptDescriptors();
        }

        IEnumerable<ScriptReference> IScriptControl.GetScriptReferences()
        {
            return GetScriptReferences();
        }

        #endregion
    }
}
